CN104550259B - A kind of finishing mill kink plays set method and finishing mill kink plays set and controls device - Google Patents
A kind of finishing mill kink plays set method and finishing mill kink plays set and controls device Download PDFInfo
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- CN104550259B CN104550259B CN201410815358.XA CN201410815358A CN104550259B CN 104550259 B CN104550259 B CN 104550259B CN 201410815358 A CN201410815358 A CN 201410815358A CN 104550259 B CN104550259 B CN 104550259B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
- B21B37/50—Tension control; Compression control by looper control
Abstract
The invention discloses a kind of finishing mill kink and play set method and finishing mill kink plays set and controls device, including: obtain the setting kink angle of kink；Kink angle is the kink angle needing kink to arrive arranged；Obtain the current kink angle that kink is presently in；Calculate and set the current tensile torque that setting tension force torque corresponding to kink angle is corresponding with current kink angle；Determine goal tension torque be a times set tension force torque and the current tensile torque of b times and, wherein, 0 a 1,0 b 1, a adds b and is equal to 1；According to goal tension torque, determine kink plays set torque.When the method that the present invention provides is in order to solve that in prior art, finishing mill kink plays set, according only to the tension force torque that current kink angle is corresponding, calculate fixing rising and overlap torque, the overtension when kink existed contacts with the strip, cause the technical problem that strip steel damages.Achieve the technique effect of the quality improving hot-rolled product.
Description
Technical field
The present invention relates to smelting iron and steel technical field, particularly relate to a kind of finishing mill kink and play set method and finish rolling
Machine kink plays set and controls device.
Background technology
During hot strip rolling, kink to the formation of continuous rolling relationship and stably plays an important role.Rolling
During, although looper height control is not completed by looper itself, but by machine before and after regulation
The velocity interpolation of frame main transmission, looper itself is only that strip steel provides tension force, but the lifting also of loop back roll
The control of contact strip steel is but completed by tower-loop control itself.At the moment of loop back roll contact strip steel, kink
Setting speed can not be zero, otherwise, when loop back roll contact strip steel after, if set amount increases for a certain reason,
Loop back roll just cannot be adjacent to strip steel again, and at this moment the tension force control of continuous-rolling system will be out of control, produces and is difficult to expect
Consequence.Otherwise, if loop back roll is in the moment of contact strip steel, its speed is the highest, the most inevitably
Strip steel is produced and clashes into, although this shock is little to adjustment of loop systematic influence, but strip steel head quilt can be made
Drawing down, affects head sizes precision and the end product quality of strip steel.
At present, rising when finishing mill kink plays set overlaps torque, is that the kink angle being presently in kink is corresponding
Current tensile torque calculate as the tension force torque of kink and calculated set torque, then overlap turn to have calculated
2-4 times of square has controlled set as fixing set torque, and when kink contacts with the strip, tension force is very big,
End narrowing and the limit of causing strip steel especially silicon steel are split, and serious affects product quality and rolling stability.
It is to say, in prior art, when finishing mill kink plays set, corresponding according only to current kink angle
Tension force torque, calculates fixing rising and overlaps torque, there is overtension when kink contacts with the strip, cause
The technical problem that strip steel damages.
Summary of the invention
The embodiment of the present application plays set method by a kind of finishing mill kink of offer and finishing mill kink plays set control
Device, when solving that in prior art, finishing mill kink plays set, according only to the tension force that current kink angle is corresponding
Torque, calculates fixing rising and overlaps torque, the overtension when kink existed contacts with the strip, cause band
The technical problem that steel damages.
On the one hand, the embodiment of the present application provides following technical scheme:
A kind of finishing mill kink plays set method, including:
Obtain the setting kink angle of described kink；The described kink angle that sets is as the described kink of needs arranged
The kink angle arrived；
Obtain the current kink angle that described kink is presently in；
Calculate setting tension force torque corresponding to described setting kink angle corresponding with described current kink angle
Current tensile torque；
Determine described setting tension force torque and the described current tensile torque of b times that goal tension torque is a times
Sum, wherein, 0 a 1,0 b 1, a adds b equal to 1；
According to described goal tension torque, determine described kink plays set torque.
Optionally, described a is equal to 30%, and described b is equal to 70%.
Optionally, described according to described tension force torque, determine described kink plays set torque, particularly as follows: from
Receiving in the first time period that set has instructed that kink plays set, arrange described kink plays a set torque for counting
Count 1.3-1.5 times of set torque；Wherein, described calculating plays set torque is kink weight compensating torque, institute
State goal tension torque and strip steel weight torque and value；From first time period terminate the second time period
In, the torque of described set reduces with the speed of 700n*m/s-1500n*m/s；Terminating from the second time period,
When entering for three time periods, the torque of described set starts to be gradually increased, and enters the closed loop control of described kink
Stage.
Optionally, the length of described first time period is more than or equal to 0.2s, and less than or equal to 0.4s.
Optionally, the length of described second time period is more than or equal to 0.2s, and less than or equal to 0.7s.
Optionally, described method also includes: detection obtains the current translational speed of the hydraulic cylinder of described kink；
Using described current translational speed as compensation, the output of the servo valve adjusting described kink compensates torque, with contracting
The deviation of the actual pressure that the setting pressure of little described hydraulic cylinder and described hydraulic cylinder are presently in, wherein, institute
State set pressure as arrange the described hydraulic cylinder of needs there is pressure；Compensate described in compensated torque with described output
Play set torque.
Optionally, described detection obtains the work at present speed of the hydraulic cylinder of described kink, particularly as follows: the cycle
Property detection obtain described kink kink angle；Described work at present speed is equal toWherein,
θiKink angle for the described kink that current period detects；Described θi-1For a upper cycle detection to described
The kink angle of kink；T is the detection cycle；Described using described work at present speed as compensation, adjust institute
The output of the servo valve stating kink compensates torque, particularly as follows: with described work at present speed and the gain preset
The product of coefficient compensates torque as the output of described servo valve.
On the other hand, it is provided that a kind of finishing mill kink plays set and controls device, including:
Acquisition module, for obtaining the setting kink angle of described kink；The described kink angle that sets is as arranging
Need described kink arrive kink angle；And obtain the current kink angle that described kink is presently in；
Computing module, for calculate setting tension force torque corresponding to described setting kink angle and described currently
The current tensile torque that kink angle is corresponding；
Determine module, for determining the described setting tension force torque and the institute of b times that goal tension torque is a times
Stating the sum of current tensile torque, wherein, 0 a 1,0 b 1, a adds b equal to 1；
Arranging module, for according to described goal tension torque, determine described kink plays set torque.
Optionally, described device also includes: the first control module, for controlling set from receiving kink
Rising in the first time period that set has instructed, described current tensile torque is equal to the 1.3-1.5 having calculated set torque
Times；Wherein, described calculating plays set torque is kink weight compensating torque, described goal tension torque and strip steel
Weight torque and value；Second control module, for control from first time period terminate the second time period
In, described current tensile torque reduces with the speed of 700n*m/s-1500n*m/s；3rd control module,
For controlling to terminate from the second time period, when entering for three time periods, described current tensile torque start by
Cumulative add, and enter the closed loop control stage of described kink.
Optionally, described device also includes: detection module, for detecting the hydraulic cylinder obtaining described kink
Current translational speed；Adjusting module, using described current translational speed as compensation, adjusts watching of described kink
The output taking valve compensates torque, is presently in the setting pressure and described hydraulic cylinder reducing described hydraulic cylinder
The deviation of actual pressure, wherein, the described pressure that sets has pressure as the described hydraulic cylinder of needs arranged；Mend
Repay module, play set torque for compensating with described output described in compensated torque.
The one or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or excellent
Point:
1, the method and device that the embodiment of the present application provides, is presently in corresponding current of angle in conjunction with kink
Tension force torque needs arrive to set the setting tension force torque that kink angle is corresponding with kink, is turned by current tensile
Square and set tension force torque and carry out proportioning and obtain goal tension torque, then be as the criterion with goal tension torque and calculate
Set torque, is on the one hand avoided that when kink current angular is too small, rises and overlapped slow problem, on the other hand energy
Avoid when kink current angular is excessive, play set torque big, the problem of impact failure strip steel, it is achieved that improve
The technique effect of the quality of hot-rolled product.
2, the method and device that the embodiment of the present application provides, when arranging firm set, plays a set torque and is maintained at meter
Count 1.2-1.5 times of set torque, then be gradually lowered set torque, on the basis keeping kink quickly to start
On, reduce tension impact when kink contacts with the strip, furthermore achieved that the quality of raising hot-rolled product
Technique effect.
3, the method and device that the embodiment of the present application provides, using the current translational speed of kink hydraulic cylinder as
Compensating, the output of the servo valve adjusting described kink compensates torque, to compensate described set torque, reduces work
Set hydraulic cylinder sets pressure and the deviation of actual pressure, it is to avoid when kink contacts with the strip, actual tension occur
Cross more than setting the tension force situation with impact strip steel, furthermore achieved that the technology of the quality improving hot-rolled product
Effect.
Accompanying drawing explanation
Fig. 1 is the flow chart that in the embodiment of the present application, finishing mill kink plays set method；
Fig. 2 is the schematic diagram that the kink in the embodiment of the present application plays set torque；
Fig. 3 is the schematic diagram that the kink in the embodiment of the present application plays set；
Fig. 4 is the structure chart that the finishing mill kink in the embodiment of the present application plays set control device.
Detailed description of the invention
The embodiment of the present application plays set method by a kind of finishing mill kink of offer and finishing mill kink plays set control
Device, when solving that in prior art, finishing mill kink plays set, according only to the tension force that current kink angle is corresponding
Torque, calculates fixing rising and overlaps torque, the overtension when kink existed contacts with the strip, cause band
The technical problem that steel damages.Achieve the technique effect of the quality improving hot-rolled product.
In order to solve the technical problem that above-mentioned prior art exists, the technical scheme that the embodiment of the present application provides
General thought is as follows:
A kind of finishing mill kink plays set method, including:
Obtain the setting kink angle of described kink；The described kink angle that sets is as the described kink of needs arranged
The kink angle arrived；
Obtain the current kink angle that described kink is presently in；
Calculate setting tension force torque corresponding to described setting kink angle corresponding with described current kink angle
Current tensile torque；
Determine described setting tension force torque and the described current tensile torque of b times that goal tension torque is a times
Sum, wherein, 0 a 1,0 b 1, a adds b equal to 1；
According to described goal tension torque, determine described kink plays set torque.
By foregoing it can be seen that combine kink to be presently in current tensile torque corresponding to angle and work
Overlap and need arrive to set the setting tension force torque that kink angle is corresponding, by current tensile torque and setting tension force
Torque carry out proportioning obtain goal tension torque, then be as the criterion with goal tension torque has calculated overlap torque, a side
Face is avoided that when kink current angular is too small, acts slow problem of overlapping, and is on the other hand avoided that and works as at kink
When anterior angle is spent big, play set torque big, the problem of impact failure strip steel, it is achieved that improve the matter of hot-rolled product
The technique effect of amount.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
Embodiment one:
The present embodiment provides a kind of finishing mill kink to play set method, and refer to Fig. 1, Fig. 1 is the present embodiment essence
Milling train kink plays the flow chart of set method, and described method includes:
Step S101, obtains the setting kink angle of described kink；The described kink angle that sets is as the need arranged
Want the kink angle that described kink arrives；
Step S102, obtains the current kink angle that described kink is presently in；
Step S103, calculates setting tension force torque corresponding to described setting kink angle and described current kink
The current tensile torque that angle is corresponding；
Step S104, determines that described setting tension force torque that goal tension torque is a times and b times described ought
The sum of forward pull torque, wherein, 0 a 1,0 b 1, a adds b equal to 1；
Step S105, according to described goal tension torque, determine described kink plays set torque.
Play the process of set below in conjunction with finishing mill kink, the finishing mill kink providing the present embodiment plays set method
Illustrate:
Refer to the kink that Fig. 2, Fig. 2 are the embodiment of the present application play the kink of set method and prior art and play set
The comparison diagram of method, wherein, solid line is that the kink of the embodiment of the present application rises and plays set torque in set method in time
Change curve, dotted line be in prior art kink rise when playing set set torque versus time curve.
As in figure 2 it is shown, the kink that the present embodiment provides plays set method, it plays set torque and changes over and be divided into
Three phases, wherein, first time period 201 and the second time period 202 are rising the set stage of kink, the 3rd
Time period 203 has been the closed loop control stage after set terminates, and illustrates separately below:
First, when received set instruction time, from receiving kink set set instruction the very first time
In section 201, the set torque that rises arranging described kink is calculated set torque 1.3-1.5 times；Wherein, institute
State calculated set torque be kink weight compensating torque, goal tension torque and strip steel weight torque and value.
In the embodiment of the present application, described goal tension torque is by above-mentioned steps S101-S104, will
Described current tensile torque and described setting tension force torque carry out the tension force torque of proportioning acquisition.
Preferably, a is less than b.
Preferably, described a is equal to 30%, and described b is equal to 70%, say, that goal tension torque=30
%* sets tension force torque+70%* current tensile torque.
Certainly, in specific implementation process, it is also possible to according to the concrete condition of kink, described a is set and is equal to
40%, described b are equal to 60%, or described a is equal to 20%, and described b is equal to 80%, in this enforcement
Example is not restricted.
In specific implementation process, described setting tension force torque and described current tensile torque are all in accordance with formula
R1{sin(θ+β)-sin(θ-α)}AσrefCalculate.That is:
Set tension force torque=R1{sin(θSet+β)-sin(θSet-α)}Aσref；
Current tensile torque=R1{sin(θCurrently+β)-sin(θCurrently-α)}Aσref；
As it is shown on figure 3, wherein, R1For kink brachium；θSetFor described setting kink angle；θCurrentlyFor
Described current kink angle, α and β is angle before and after strip steel and rolling horizontal line, and A is strip steel area,
σrefFor unit tension force.
In specific implementation process, described kink weight compensating torque is that on-the-spot actual test in advance obtains not
With the kink weight compensating value under kink angle.
DescribedWherein, g is acceleration of gravity, ρ
For strip steel density, W is strip width, and h is belt steel thickness, and L is set amount between frame.
In the embodiment of the present application, the length of described first time period is more than or equal to 0.2s, and is less than or equal to
0.4s, preferably, a length of 0.3s of described first time period.
Specifically, replace described current tensile torque to calculate rising of kink with described goal tension torque to overlap
Torque, can improve set when kink current kink angle too small by adding the compensation setting kink angle
Torque, and then improved set speed, when kink current kink angle is excessive, set kink by adding
The compensation of angle has reduced set torque, reduces the collision to strip steel.
Further, the set torque that rises arranging described kink is to have calculated 1.3-1.5 times of set torque rather than showed
Have 2-4 times in technology, can overlap on the basis of speed having ensured, it is to avoid rise set torque excessive cause rush
Hit strip steel, cause the end narrowing of strip steel especially silicon steel and limit to split.
It follows that as in figure 2 it is shown, after described first time period 201 terminates, entered for the second time period 202,
I.e. in the second time period 202 from first time period 201 end, the torque of described set is with 700n*m/s
The speed of-1500n*m/s reduces.
Preferably, the torque of described set reduces with the speed of 1000n*m/s.
In the embodiment of the present application, the length of described second time period is more than or equal to 0.2s, and is less than or equal to
0.7s。
Specifically, after quickly playing set, it has been gradually lowered set torque, so that when kink contact strip steel,
Impact less, tension stability, it is to avoid damage strip steel, improve product quality.
Further, also wrap in aforementioned first time period 201 and the set stage control that rises in the second time period 202
Include:
Detection obtains the current translational speed of the hydraulic cylinder of described kink；
Torque is compensated as compensation, the output of the servo valve adjusting described kink using described current translational speed,
With the deviation of the actual pressure that the setting pressure and described hydraulic cylinder that reduce described hydraulic cylinder are presently in, its
In, the described pressure that sets has pressure as the described hydraulic cylinder of needs arranged；
Compensate with described output and play set torque described in compensated torque.
Specifically, the work at present speed of the hydraulic cylinder of described kink is by periodically detection kink
Kink angle obtains, particularly as follows: be periodically detected the kink angle obtaining described kink；Described currently
Operating rate is equal toWherein, θiKink angle for the described kink that current period detects
Degree；Described θi-1Kink angle for a upper cycle detection to described kink；T is the detection cycle；
Specifically, using described work at present speed as compensation, the output of the servo valve of described kink is adjusted
Compensate torque, particularly as follows: the product using described work at present speed with the gain coefficient preset is watched as described
The output taking valve compensates torque.
In specific implementation process, described gain coefficient can be: staff is according to conventional kink work
The empirical parameter that parameter draws.
Specifically, compensate with described output and play set torque described in compensated torque, Ke Yiwei: when hydraulic cylinder
When work at present speed is faster than default operating rate, the torque of described set deducts after described output compensates torque to be made
Torque is overlapped for rising of kink；When the work at present speed of hydraulic cylinder is slower than default operating rate, described set
Torque overlaps torque, to avoid kink to contact with the strip as rising of kink after compensating torque plus described output
Moment, the actual pressure of set hydraulic cylinder more than set pressure cause causing actual tension big and kink and strip steel not
During contact, kink hydraulic cylinder actual pressure causes, less than setting pressure, the problem that tension force is little, reduces kink hydraulic cylinder
Set pressure and the deviation of actual pressure.
Subsequently, after kink has contacted with the strip, a set stage terminates, and i.e. enters for the 3rd time period 203；
From the end of the second time period 202, when entering the 3rd time period 203, the torque of described set starts gradually to increase
Add, and enter the closed loop control stage of described kink.
Specifically, the second time period 202 terminated to be i.e. the end in set stage, in specific implementation process,
The trigger condition entering for the 3rd time period 203 from the second time period 202 can be, but not limited to following three kinds:
The first, from receiving, overlap timing instruction arrive 0.3s；The second, from kink hydraulic pressure being detected
The actual pressure of cylinder arrives 95% timing of the cylinder pressure set and arrives 0.1s；The third, detect
The actual pressure of kink hydraulic cylinder is more than the cylinder pressure set.
In specific implementation process, in described 3rd time period 203, lark's head does up the set stage, and entrance is closed
Ring controls the stage, identical with the loop control method in closed loop control stage in prior art.
On the other hand, based on same design, the present invention provides a kind of and real by another embodiment of the application
Execute the device that the method in example one is corresponding, detailed in Example two.
Embodiment two
In embodiment two, it is provided that a kind of finishing mill kink plays set and controls device, refer to Fig. 4, Fig. 4
For the structural representation of device in the present embodiment, described device includes:
Acquisition module 401, for obtaining the setting kink angle of described kink；Described set kink angle as
The kink angle needing described kink to arrive arranged；And obtain the current kink angle that described kink is presently in
Degree；
Computing module 402, for calculating setting tension force torque corresponding to described setting kink angle and described
The current tensile torque that current kink angle is corresponding；
Determine module 403, for determining the described setting tension force torque and b times that goal tension torque is a times
The sum of described current tensile torque, wherein, 0 a 1,0 b 1, a adds b equal to 1；
Arranging module 404, for according to described goal tension torque, determine described kink plays set torque.
In the embodiment of the present application, described device also includes:
First control module, for control from receiving kink set set instruction first time period
In, described current tensile torque is equal to calculate 1.3-1.5 times of set torque；Wherein, described calculating plays set
Torque be kink weight compensating torque, described goal tension torque and strip steel weight torque and value；
Second control module, for control from first time period terminate the second time period in, described currently
Tension force torque reduces with the speed of 700n*m/s-1500n*m/s；
3rd control module, for controlling to terminate from the second time period, when entering for three time periods, described
Current tensile torque starts to be gradually increased, and enters the closed loop control stage of described kink.
In the embodiment of the present application, described device also includes:
Detection module, for detecting the current translational speed of the hydraulic cylinder obtaining described kink；
Adjusting module, using described current translational speed as compensation, adjusts the output of the servo valve of described kink
Compensate torque, to reduce the actual pressure that pressure and described hydraulic cylinder be presently in of setting of described hydraulic cylinder
Deviation, wherein, the described pressure that sets has pressure as the described hydraulic cylinder of needs arranged；
Compensating module, plays set torque for compensating with described output described in compensated torque.
The finishing mill kink provided in the device and the embodiment one that provide in the present embodiment plays set method, be based on
Two aspects under same inventive concept, are described in detail the implementation process of method the most,
So those skilled in the art can according to the structure of the device being apparent from the present embodiment described above and
Implementation process, succinct for description, just repeat no more at this.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:
1, the method and device that the embodiment of the present application provides, is presently in corresponding current of angle in conjunction with kink
Tension force torque needs arrive to set the setting tension force torque that kink angle is corresponding with kink, is turned by current tensile
Square and set tension force torque and carry out proportioning and obtain goal tension torque, then be as the criterion with goal tension torque and calculate
Set torque, is on the one hand avoided that when kink current angular is too small, rises and overlapped slow problem, on the other hand energy
Avoid when kink current angular is excessive, play set torque big, the problem of impact failure strip steel, it is achieved that improve
The technique effect of the quality of hot-rolled product.
2, the method and device that the embodiment of the present application provides, when arranging firm set, plays a set torque and is maintained at meter
Count 1.2-1.5 times of set torque, then be gradually lowered set torque, on the basis keeping kink quickly to start
On, reduce tension impact when kink contacts with the strip, furthermore achieved that the quality of raising hot-rolled product
Technique effect.
3, the method and device that the embodiment of the present application provides, using the current translational speed of kink hydraulic cylinder as
Compensating, the output of the servo valve adjusting described kink compensates torque, to compensate described set torque, reduces work
Set hydraulic cylinder sets pressure and the deviation of actual pressure, it is to avoid when kink contacts with the strip, actual tension occur
Cross more than setting the tension force situation with impact strip steel, furthermore achieved that the technology of the quality improving hot-rolled product
Effect.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a finishing mill kink plays set method, it is characterised in that including:
Obtain the setting kink angle of described kink；The described kink angle that sets is as the described kink of needs arranged
The kink angle arrived；
Obtain the current kink angle that described kink is presently in；
Calculate setting tension force torque corresponding to described setting kink angle corresponding with described current kink angle
Current tensile torque；
Determine described setting tension force torque and the described current tensile torque of b times that goal tension torque is a times
Sum, wherein, 0 a 1,0 b 1, a adds b equal to 1；
According to described goal tension torque, determine described kink plays set torque.
2. the method for claim 1, it is characterised in that described a is equal to 30%, described b etc.
In 70%.
3. the method for claim 1, it is characterised in that described according to described tension force torque, really
Torque is overlapped in rising of fixed described kink, particularly as follows:
From receiving kink set set instruction first time period in, arrange described kink rise set turn
Square is calculated set torque 1.3-1.5 times；Wherein, described calculating plays set torque is that kink weight compensating turns
Square, described goal tension torque and strip steel weight torque and value；
From first time period terminate the second time period in, described set torque with 700n*m/s-1500
The speed of n*m/s reduces；
Terminating from the second time period, when entering for three time periods, the torque of described set starts to be gradually increased,
And enter the closed loop control stage of described kink.
4. method as claimed in claim 3, it is characterised in that the length of described first time period is more than
Equal to 0.2s, and less than or equal to 0.4s.
5. method as claimed in claim 3, it is characterised in that the length of described second time period is more than
Equal to 0.2s, and less than or equal to 0.7s.
6. the method for claim 1, it is characterised in that also include:
Detection obtains the current translational speed of the hydraulic cylinder of described kink；
Torque is compensated as compensation, the output of the servo valve adjusting described kink using described current translational speed,
With the deviation of the actual pressure that the setting pressure and described hydraulic cylinder that reduce described hydraulic cylinder are presently in, its
In, the described pressure that sets has pressure as the described hydraulic cylinder of needs arranged；
Compensate with described output and play set torque described in compensated torque.
7. method as claimed in claim 6, it is characterised in that:
Described detection obtains the work at present speed of the hydraulic cylinder of described kink, obtains particularly as follows: be periodically detected
Obtain the kink angle of described kink；Described work at present speed is equal toWherein, θiFor working as
The kink angle of the described kink that front cycle detection is arrived；Described θi-1For a upper cycle detection to described kink
Kink angle；T is the detection cycle；
Described using described work at present speed as compensation, adjust the output compensation turn of the servo valve of described kink
Square, particularly as follows: using described work at present speed with the product of gain coefficient preset as described servo valve
Output compensates torque.
8. a finishing mill kink plays set control device, it is characterised in that including:
Acquisition module, for obtaining the setting kink angle of described kink；The described kink angle that sets is as arranging
Need described kink arrive kink angle；And obtain the current kink angle that described kink is presently in；
Computing module, for calculate setting tension force torque corresponding to described setting kink angle and described currently
The current tensile torque that kink angle is corresponding；
Determine module, for determining the described setting tension force torque and the institute of b times that goal tension torque is a times
Stating the sum of current tensile torque, wherein, 0 a 1,0 b 1, a adds b equal to 1；
Arranging module, for according to described goal tension torque, determine described kink plays set torque.
9. device as claimed in claim 8, it is characterised in that also include:
First control module, for control from receiving kink set set instruction first time period
In, described current tensile torque is equal to calculate 1.3-1.5 times of set torque；Wherein, described calculating plays set
Torque be kink weight compensating torque, described goal tension torque and strip steel weight torque and value；
Second control module, for control from first time period terminate the second time period in, described currently
Tension force torque reduces with the speed of 700n*m/s-1500n*m/s；
3rd control module, for controlling to terminate from the second time period, when entering for three time periods, described
Current tensile torque starts to be gradually increased, and enters the closed loop control stage of described kink.
10. device as claimed in claim 9, it is characterised in that also include:
Detection module, for detecting the current translational speed of the hydraulic cylinder obtaining described kink；
Adjusting module, using described current translational speed as compensation, adjusts the output of the servo valve of described kink
Compensate torque, to reduce the actual pressure that pressure and described hydraulic cylinder be presently in of setting of described hydraulic cylinder
Deviation, wherein, the described pressure that sets has pressure as the described hydraulic cylinder of needs arranged；
Compensating module, plays set torque for compensating with described output described in compensated torque.
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| CN105665450B (en) * | 2016-01-15 | 2017-08-15 | 山西太钢不锈钢股份有限公司 | Hot continuous rolling thin specification steel plate milling train kink void set gantry speed control method |
| CN109731929B (en) * | 2018-12-22 | 2020-08-21 | 鞍钢集团信息产业有限公司 | Hydraulic loop control method based on pole allocation method |
| CN109731920B (en) * | 2019-01-18 | 2020-06-02 | 湖南华菱涟钢薄板有限公司 | Loop control method, device, terminal equipment and computer readable storage medium |
| CN110280598B (en) * | 2019-07-19 | 2020-11-13 | 北京宇轩智能科技有限公司 | Intelligent steel rolling intelligent loop pulling control method |
| CN110773584B (en) * | 2019-10-19 | 2021-05-07 | 涿州北方重工设备设计有限公司 | Method and system for controlling internal tension of double-loop of production line |
| CN110961469B (en) * | 2019-12-19 | 2021-04-27 | 北京首钢股份有限公司 | Method and device for controlling stability of strip steel head |
| CN113083911B (en) * | 2021-03-31 | 2023-01-10 | 北京首钢股份有限公司 | Rolling process control method |
| CN114453432B (en) * | 2022-01-06 | 2023-12-01 | 首钢京唐钢铁联合有限责任公司 | Control method and device for strip steel finish rolling equipment |
| CN114472545B (en) * | 2022-02-15 | 2023-10-31 | 山西太钢不锈钢股份有限公司 | Dynamic control method for loop lifting angle of finishing mill loop |
| CN114833203B (en) * | 2022-03-25 | 2023-05-05 | 北京首钢股份有限公司 | Dynamic calibration method and system for loop gravity torque of finishing mill |
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| JPS5951364B2 (en) * | 1979-04-06 | 1984-12-13 | 三菱電機株式会社 | Looper control device for hot rolling mill |
| JPH09141315A (en) * | 1995-11-22 | 1997-06-03 | Kawasaki Steel Corp | Control of tension between stands and looper |
| JP5776204B2 (en) * | 2011-02-14 | 2015-09-09 | Ｊｆｅスチール株式会社 | Looper control device and looper control method |
| CN103909095B (en) * | 2012-12-31 | 2016-07-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-rolling mill loop control method and the milling method for hot-rolling mill |
| CN103920720B (en) * | 2013-01-14 | 2016-01-20 | 宝山钢铁股份有限公司 | A kind of strip tension dynamic control method based on cover amount deviation and control system thereof |
| CN104107836B (en) * | 2013-04-18 | 2016-01-27 | 宝山钢铁股份有限公司 | Utilize to impact and compensate the method that automatic stabilisation finish rolling kink plays cover angle |
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